Tektronix TDS 684A Performance Verification Manual Download

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Technical Reference

TDS 684A & TDS 744
Digitizing Oscilloscope
Performance Verification and Specifications

070-8990-02

Please check for change information
at the rear of this manual.

Third Edition: November 1994

Summary of Contents for TDS 684A

Page 1: ...nical Reference TDS 684A TDS 744 Digitizing Oscilloscope Performance Verification and Specifications 070 8990 02 Please check for change information at the rear of this manual Third Edition November 1...

Page 2: ...patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in the U S A Tektronix Inc P...

Page 3: ...any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish ser...

Page 4: ......

Page 5: ...cord 1 19 TDS 744 Test Record 1 23 Signal Acquisition System Checks 1 27 Time Base System Checks 1 41 Trigger System Checks 1 43 Output Signal Checks 1 56 Option 05 Video Trigger Checks 1 64 Specifica...

Page 6: ...Table of Contents ii TDS 684A TDS 744 Performance Verification and Specifications...

Page 7: ...grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensur...

Page 8: ...s identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property...

Page 9: ...h Voltage Protective Ground Earth Terminal ATTENTION Refer to Manual Double Insulated Certifications and Compliances CSA Certification includes the products and power cords appropriate for use in the...

Page 10: ...General Safety Summary vi TDS 684A TDS 744 Performance Verification and Specifications...

Page 11: ...s The following documents are related to the use or service of the digitizing oscilloscope H The TDS 684A 744 User Manual Tektronix part number 070 8991 XX H The TDS Family Programmer Manual Tektronix...

Page 12: ...Preface viii TDS 684A TDS 744 Performance Verification and Specifications...

Page 13: ...Performance Verification Procedures...

Page 14: ......

Page 15: ...ed then do the brief procedures under Functional Tests that begin on page 1 7 Advantages These procedures require minimal additional time to perform require no additional equipment other than a standa...

Page 16: ...step below Initialize the oscilloscope by doing Press save recall SETUP Now press the main menu button Initialize the oscilloscope Press save recall SETUP Now press the main menu button Recall Factor...

Page 17: ...on of waveform record relative to the screen and display General purpose knob readout Waveform reference symbols show ground levels and waveform sources Graticule and waveforms Side menu area Readouts...

Page 18: ...Performance Verification Procedures 1 4 TDS 684A TDS 744 Performance Verification and Specifications...

Page 19: ...before doing this procedure 1 Verify that internal diagnostics pass Do the following substeps to verify passing of internal diagnostics a Display the System diagnostics menu H Press SHIFT then press...

Page 20: ...tion Press the main menu button Signal Path then press the side menu button OK Compensate Signal Paths g Wait Signal path compensation may take fifteen minutes to run While it progresses a clock icon...

Page 21: ...functions that is they verify that the oscilloscope features operate They do not verify that they operate within limits Therefore when the instructions in the functional tests that follow call for you...

Page 22: ...probe tip to PROBE COMPENSATION SIGNAL on the front panel connect the probe ground typically black to PROBE COMPENSA TION GND If using a P6245 probe you may want to attach a Y lead connector and two...

Page 23: ...Press CLEAR MENU to remove any menu that may be on the screen d Verify that the channel is operational Confirm that the following statements are true H The vertical scale readout for the channel unde...

Page 24: ...gh e until all four input channels are verified 3 Remove the test hookup Disconnect the probe from the channel input and the probe compensation terminals Equipment Required One probe such as the P6245...

Page 25: ...the probe compensation terminals Equipment Required One probe such as the P6245 or P6139A Prerequisites None 1 Install the test hookup and preset the oscilloscope controls a Hook up the signal source...

Page 26: ...d Triggerable then press the side menu button Delayed Only H Set the horizontal SCALE for the D delayed time base to 200 s b Select the delayed trigger level menu H Press SHIFT then press DELAYED TRIG...

Page 27: ...the probe on CH 1 Connect the probe tip to PROBE COMPENSATION SIGNAL on the front panel connect the probe ground to PROBE COMPENSATION GND See Figure 1 3 on page 1 8 b Insert the test disk Insert the...

Page 28: ...ecall Factory Setup and the side menu button OK Confirm Factory Init to restore the 500 s time base and the five cycle waveform H Press the main menu button Recall Saved Setup then press the side menu...

Page 29: ...prise an extensive valid confirmation of perform ance and functionality when the following requirements are met H The cabinet must be installed on the Digitizing Oscilloscope H You must have performed...

Page 30: ...banana Tektronix part number 103 0090 00 Various Accuracy Tests 7 Connector BNC T Male BNC to dual female BNC Tektronix part number 103 0030 00 Checking Trigger Sensitivity 8 Coupler Dual Input Female...

Page 31: ...ktronix part number PG 502 Used to Test Video Option 05 Equipped Instruments Only 19 Cable Coaxial two required 75 36 in male to male BNC connectors Tektronix part number 012 1338 00 Used to Test Vide...

Page 32: ...Performance Tests 1 18 TDS 684A TDS 744 Performance Verification and Specifications...

Page 33: ...69 1 mV 691 mV __________ __________ __________ __________ __________ __________ 1 45 mV 69 1 mV 691 mV DC Voltage Measurement Accuracy Averaged CH1 5 mV Vert scale setting 5 Div position setting 1 V...

Page 34: ...le setting 5 Div position setting 10 V offset 11 786 V __________ __________ 11 420 V CH3 1 V Vert scale setting 5 Div position setting 10 V offset 17 26 V __________ __________ 18 76 V CH3 1 V Vert s...

Page 35: ...10 137 V Main Trigger DC Coupled Negative Slope 9 863 V __________ __________ 10 137 V Delayed Trigger DC Coupled Positive Slope 9 863 V __________ __________ 10 137 V Delayed Trigger DC Coupled Negat...

Page 36: ...te of Calibration Technician TDS 684A Performance Test Maximum Outgoing Incoming Minimum CH 3 SIGNAL OUTPUT 1 M Pk Pk 80 mV __________ __________ Pk Pk 120 mV CH 3 SIGNAL OUTPUT 50 Pk Pk 40 mV _______...

Page 37: ...mV __________ __________ __________ __________ __________ __________ 1 6 mV 25 1 mV 251 mV DC Voltage Measurement Accuracy Averaged CH1 5 mV Vert scale setting 5 Div position setting 1 V offset 1 0355...

Page 38: ...ting 5 Div position setting 10 V offset 11 6615 V __________ __________ 11 5385 V CH3 1 V Vert scale setting 5 Div position setting 10 V offset 17 7785 V __________ __________ 18 2215 V CH3 1 V Vert s...

Page 39: ...ower Limit Upper Limit 1 9 ms 1 9 ms __________ __________ __________ __________ 2 1 ms 2 1 ms Main Trigger DC Coupled Positive Slope 9 9393 V __________ __________ 10 1147 V Main Trigger DC Coupled N...

Page 40: ...ER OUTPUT 50 High Low High 1 0 V __________ __________ __________ __________ Low 0 25 V DELAYED TRIGGER OUTPUT 1 M High Low High 2 5 V __________ __________ __________ __________ Low 0 7 V CH 3 SIGNAL...

Page 41: ...dify the default settings H Press SHIFT then press ACQUIRE MENU H On the TDS 684A press the main menu button Mode then press the side menu button Average 16 H On the TDS 744 press the main menu button...

Page 42: ...251 mV 1 Vertical position is set to 0 divisions and vertical offset to 0 V when the oscilloscope is initialized in step 1 c Display the test signal The waveform position and offset were initialized f...

Page 43: ...No hookup was required WARNING The generator is capable of outputting dangerous voltages Be sure to set the DC calibration generator to 0 volts before connecting disconnecting and or moving the test h...

Page 44: ...o the other side of the BNC T connector Now connect the BNC T connector to CH 1 See Figure 1 5 DC Calibrator 50 Coaxial Cables Dual Banana to BNC Adapters BNC T Connector Digitizing Oscilloscope Outpu...

Page 45: ...Set the vertical SCALE to one of the settings listed in Table 1 3 that is not yet checked Start with the first setting listed Table 1 3 DC Accuracy Scale Setting Position Setting Divs Offset Setting G...

Page 46: ...re the test signal Press CLEAR MENU Read the measurement results at the Mean measurement readout See Figure 1 6 Turn on the measurement called mean and read the results here Figure 1 6 Measurement of...

Page 47: ...reset the instrument controls a Initialize the oscilloscope H Press save recall SETUP Press the main menu button Recall Factory Setup then press the side menu button OK Confirm Factory Init b Modify t...

Page 48: ...ve the channel just confirmed from display H Press the front panel button that corresponds to the channel you are to confirm H Move the leveling head to the channel you selected b Match the trigger so...

Page 49: ...ns 500 MHz 300 MHz 4 24 mV e Display the test signal Do the following subparts to first display the reference signal and then the test signal H Press MEASURE then press the main menu button Select Mea...

Page 50: ...SET LEVEL TO 50 as necessary to trigger the signal H Read the results at the CHx Pk Pk readout which will automatically measure the amplitude of the test signal See Figure 1 8 Set the generator refer...

Page 51: ...al scale setting have not changed h Check remaining vertical scale settings against limits optional H If desired finish checking the remaining vertical scale settings for the channel under test by rep...

Page 52: ...nel control settings H Do not adjust the vertical position of any channel during this procedure H Set the horizontal SCALE to 500 ps H Press SHIFT then press ACQUIRE MENU H Press the main menu button...

Page 53: ...he display H Display the live waveform Move the coupler from CH 3 to CH 4 so that CH 1 and CH 4 are driven Press CH 4 to display See Figure 1 10 on page 1 40 H Display the reference waveforms To do th...

Page 54: ...the readout on screen Locate the time reference points for these waveforms 2 Display the waveforms 1 Read results 4 Align each cursor to the time reference points 3 Figure 1 10 Measurement of Channel...

Page 55: ...nstrument controls a Hook up the test signal source Connect through a 50 W precision coaxial cable the time mark output of a time mark generator to CH 1 Set the output of the generator for 10 ms marke...

Page 56: ...Runs After Main See Figure 1 12 b Measure the test signal H Set the horizontal SCALE of the D delayed time base to 500 ns for the TDS 684A or to 100 ns for the TDS 744 H Set delayed time to 10 ms for...

Page 57: ...m and Delay Time 3 Disconnect the hookup Disconnect the cable from the generator output at the input connector of CH 1 Trigger System Checks These procedures check those characteristics that relate to...

Page 58: ...to 10 ns on the TDS 684A and 12 5 ns on the TDS 744 50 Coaxial Cable Medium Frequency Sine Wave Generator Digitizing Oscilloscope Output 10XAttenuator Figure 1 13 Initial Test Hookup c Hook up the te...

Page 59: ...t the lower limit to 2 ns d Change limits until triggering stops H Press SET LEVEL TO 50 H While doing the following subparts monitor the display it will stop acquiring and the front panel light TRIG...

Page 60: ...sure triggering at 250 kHz H Press the side menu button Upper Limit Use the keyboard to set the upper limit to 4 s H Press the side menu button Lower Limit Use the keypad to set the lower limit to 500...

Page 61: ...he oscilloscope loses triggering is within 1 s to 3 s inclusive for the TDS 684A or is within 1 9 s to 2 1 s inclusive for the TDS 744 H Enter time on test record 4 Disconnect the hookup Disconnect th...

Page 62: ...in trigger system is within limits for Trigger level Threshold accuracy a Display the test signal H Set the vertical SCALE to 200 mV H Press VERTICAL MENU then press the main menu button Position H Se...

Page 63: ...ess the side menu button for negative slope See icon at left Repeat substep b H CHECK that the Level readout in the main menu is within 9 863 V to 10 137 V inclusive for the TDS 684A or is within 9 93...

Page 64: ...following subparts in the order listed H CHECK that the Level readout in the side menu is within 9 863 V to 10 137 V inclusive for the TDS 684A or is within 9 9393 V to 10 1147 V inclusive for the TD...

Page 65: ...r 25 ns on the TDS 744 H Press HORIZONTAL MENU then press the main menu button Time Base H Press the side menu button Delayed Only then press the side menu button Delayed Triggerable H Set the horizon...

Page 66: ...ress the main menu button Select Measrmnt for Ch1 H Press the side menu button more until Amplitude appears in the side menu its icon is shown at the left Press the side menu button Amplitude H Press...

Page 67: ...ain menu button Slope H Press SET LEVEL TO 50 Adjust the TRIGGER LEVEL knob so that the TRIG D light is on Set the level to near the middle of the range where the TRIG D light is on CHECK that the tri...

Page 68: ...See Figure 1 18 H Enter pass fail result for delayed trigger on the test record H Leave the Delayed trigger system triggered on the positive slope of the waveform before continuing to the next step A...

Page 69: ...stalled in step 1 Connect through its leveling head the signal output of a high fre quency leveled sine wave generator to CH 1 b Set the Main and Delayed Horizontal Scales H Set the horizontal SCALE t...

Page 70: ...precision cables Item 5 One calibration generator Item 10 Prerequisites See page 1 15 Also the Digitizing Oscilloscope must have passed Check DC Voltage Measurement Accuracy on page 1 29 1 Install the...

Page 71: ...SCALE to 1 V H Use the vertical POSITION knob to center the display on screen b Measure logic levels H Press MEASURE then press the main menu button Select Measurement for Ch2 H Select high and low me...

Page 72: ...CHECK that the Ch2 High readout is 1 0 volt and that the Ch2 Low readout 0 25 volts H Enter high and low voltages on test record H Press the side menu button to select the 1 MW setting H Press CLEAR M...

Page 73: ...he TDS 744 H Enter voltage on test record H Press VERTICAL MENU then press the side menu button to toggle to the 50 W setting H Press CLEAR MENU H CHECK that the readout Ch2 Pk Pk is between 40 mV and...

Page 74: ...onnect the black clip to PROBE COMPENSATION GND See Figure 1 21 Digitizing Oscilloscope 50 Coaxial Cable Female BNC to Clip Adapter Black Lead to GND Figure 1 21 Initial Test Hookup b Initialize the o...

Page 75: ...peatedly press the side menu button more until Frequency appears in the side menu its icon is shown at the left Press the side menu button Frequency b Check against limits H CHECK that the CH 1 Freq r...

Page 76: ...s H Connect the output of a DC calibration generator through a dual banana connector followed by a 50 W precision coaxial cable to one side of a BNC T connector See Figure 1 23 H Connect the Sense out...

Page 77: ...cisely overlaps the base lower level of the stored probe compensation signal This value will be near zero volts H Record the setting of the DC generator f Press CLEAR MENU to remove the menus from the...

Page 78: ...efaults by completing the following steps a Press save recall SETUP b Press the main menu Recall Factory Setup c Press the side menu OK Confirm Factory Init d Wait for the Clock Icon to leave the scre...

Page 79: ...SHIFT n then ENTER 3 Check Jitter vs Signal Amplitude a Setup equipment for Jitter Test See Figure 1 25 H Connect one of the rear panel composite outputs marked COMPST on the TSG121 through a 75 W ca...

Page 80: ...already set to 16 f Press the main menu Create Limit Test Template g Press the side menu V Limit h Use the keypad to set V Limit to 180 mdiv press 180 SHIFT m then ENTER i Press the side menu OK Stor...

Page 81: ...hat the oscilloscope successfully makes 100 acquisitions If not successful the oscilloscope bell will ring When the word Run in the top left corner of the display changes to STOP the test is complete...

Page 82: ...u Stop After g Press the side menu RUN STOP button only h Press the main menu Mode i Press the side menu Sample j Press RUN STOP k Press VERTICAL MENU l Use the keypad to set fine scale to 300 mV pres...

Page 83: ...nal Range Test 300 mV n Use the keypad to set the fine scale to 75 mV press 75 SHIFT m then ENTER o CONFIRM that the TRIG D LED stays lit and that the waveform on screen is stable i e does not move ho...

Page 84: ...illoscope for 60 Hz Rejection Test H Use the keypad to set the Ch1 Fine Scale to 282 mV press 282 SHIFT m then ENTER H Press WAVEFORM OFF H Press CH2 H Press VERTICAL MENU H Use the keypad set the fin...

Page 85: ...for three vertical divisions of 60 Hz signal See Figure 1 31 The signal will not be triggered That is it will run free Figure 1 31 60 Hz Rejection Test Setup Signal c Check 60 Hz rejection H Use the...

Page 86: ...r of the PAL signal source labeled COMPST on the TSG 121 through a 75 W cable and a 75 W terminator to the CH2 input See Figure 1 32 PAL Signal Source BNC T Connector 75 Terminators Digitizing Oscillo...

Page 87: ...ess CH1 H Press HORIZONTAL MENU H Press the main menu Record Length H Press the side menu more until you see the appropriate menu H Press the side menu 5000 points in 100divs H Press the main menu Hor...

Page 88: ...inator Output Figure 1 34 Line Count Accuracy Test Hookup H Press the main menu Trigger Position H Press the side menu to Set to 50 H Press the main menu to Horiz Pos H Press the side menu to Set to 5...

Page 89: ...ess the side menu V Bars H Using the General Purpose knob place the left cursor directly over the trigger T icon H Press SELECT H Turn the General Purpose knob to adjust the right cursor for a cursor...

Page 90: ...on button and finally Off from the side menu 7 Check the Sync Duty Cycle a Setup digitizing oscilloscope for Sync Duty Cycle Test H Press TRIGGER MENU H Press the Standard pop up to select FlexFmt Tri...

Page 91: ...m then ENTER H Press the main menu Type pop up to select Edge H Press HORIZONTAL MENU H Press the main menu Record Length H Select the side menu 1000 points in 20div If needed first press the side men...

Page 92: ...o the oscilloscope CH1 input See Figure 1 37 Pulse Generator Digitizing Oscilloscope 50 Cable 50 Terminator Output Figure 1 37 PG502 Setup for Sync Duty Cycle Test H Turn the pulse generator OUTPUT VO...

Page 93: ...ns H Turn the HORIZONTAL SCALE knob to set the oscilloscope time base to 5ms div H Turn the pulse generator PERIOD variable control to adjust the period until the oscilloscope CH1 Period measurement r...

Page 94: ...up is correct and the oscilloscope will trigger H CONFIRM that the TRIG D LED is lit and the waveform is stable H Disconnect the signal source from CH1 wait a few seconds then reconnect the signal H C...

Page 95: ...erformance Verification and Specifications 1 81 H Disconnect all test equipment TSG 121 from the digitizing oscilloscope H Press save recall SETUP press the main menu button Recall Factory Setup and t...

Page 96: ...Performance Tests 1 82 TDS 684A TDS 744 Performance Verification and Specifications...

Page 97: ...Specifications...

Page 98: ......

Page 99: ...A and 744 Oscilloscopes Feature TDS 684A TDS 744 Digitizing rate maximum 5 GS s on each channel simultaneously 2 GS s Analog bandwidth 1 GHz 500 MHz Channels Four each with 8 bit resolution Record len...

Page 100: ...parameter extraction feature called measure to display the results of measurements made or the status of the instrument Assign the general purpose knob to adjust a selected parameter function More qu...

Page 101: ...per Record Record Length Sample Division Sec Div Sequence Record Length Fit to Screen OFF 50 1 2 5 Fit to Screen ON Sample Div Sec Div Sequence varies 500 10 divs 10 divs 1000 20 divs 10 divs 2500 50...

Page 102: ...pulses or on pulse widths or periods inside or outside limits that you specify It can also trigger on a pulse edge that has a slew rate faster or slower than the rate you specify The pulse trigger is...

Page 103: ...up the Digitizing Oscilloscope for a viewable display based on the input signal Measurement Assistance Once you have set up to make your measurements the cursor and measure features can help you quic...

Page 104: ...nch DOS 3 3 or later compatible disk Any or all of the saved waveforms may be displayed for comparison with the waveforms being currently acquired The source and destination of waveforms to be saved m...

Page 105: ...y options You can customize the following attributes of your display H Color Waveforms readouts graticule and variable persistence with color coding H Intensity waveforms readouts and graticule H Styl...

Page 106: ...Specifications 2 8 TDS 684A TDS 744 Performance Verification and Specifications...

Page 107: ...Offset Volts Div Setting Offset Range Ranges Offset 1 mV div 100 mV div 101 mV div 1 V div 1 01 V div 10 V div 1 V 10 V 100 V Range Position 5 divisions Range 1 MW Sensitivity 1 mV div to 10 V div2 R...

Page 108: ...eform rates for interpolated or equivalent time on the TDS 744 waveform records 3 The Waveform Rate WR is the equivalent sample rate of a waveform record For a waveform record acquired by real time sa...

Page 109: ...V 400 V Video Trigger Modes of Operation Option 05 Video Trigger Supports the following video standards H NTSC 525 60 2 field mono or 4 field H PAL 625 50 2 field mono or SECAM 8 field H HDTV 787 5 60...

Page 110: ...igh to low transition indicates the trigger occurred Fuse Rating Either of two fuses1 may be used a 0 25I 1 25I UL 198 6 3AG 6 A FAST 250 V or a 5 mm 20 mm IEC 127 5 A T 250 V 1 Each fuse type require...

Page 111: ...4A Digitizing Oscilloscope 14 1 kg 31 lbs with front cover TDS 684A 24 0 kg 53 lbs when packaged for domestic shipment TDS 744 25 4 kg 56 lbs when packaged for domestic shipment Rackmount TDS 684A Dig...

Page 112: ...Nominal Traits 2 14 TDS 684A TDS 744 Performance Verification and Specifications...

Page 113: ...ove this section lists only warranted characteristics A list of typical characteristics starts on page 2 21 Performance Conditions The performance limits in this specification are valid with these con...

Page 114: ...nd Bandwidth selection is FULL 10 mV div 1 V div 5 mV div 9 95 mV div 2 mV div 4 98 mV div 1 mV div 1 99 mV div DC 1 GHz DC 750 MHz DC 600 MHz DC 500 MHz DC 500 MHz DC 500 MHz DC 500 MHz DC 450 MHz An...

Page 115: ...for the ambient temperature range of 0_C to 30_C Reduce the upper bandwidth frequencies by 5 MHz for the TDS 684A or by 2 5 MHz for the TDS 744 for each _C above 30_C 3 The AC Coupled Lower Frequency...

Page 116: ...Table 2 13 Warranted Characteristics Output Ports Probe Compensator and Power Requirements Name Description Logic Levels Main and Delayed Trigger Outputs Characteristic Limits Logic Levels Main and De...

Page 117: ...ting To 12190 m 40 000 ft non operating Dynamics Random vibration floppy diskette not installed 0 31 g rms from 5 to 500 Hz 10 minutes each axis operating 3 07 g rms from 5 to 500 Hz 10 minutes each a...

Page 118: ...st will pass with LCOM part CTL3VGAMM 5 1 2 The GPIB cable connected to the instrument for certain of the emissions tests must be low EMI having a high quality outer shield connected through a low imp...

Page 119: ...ed rise time TDS 684A For the averaged condition 1 4 Tr Wi 40 where Wi is the Waveform Interval as described elsewhere in these specifications TDS 684A Extra error in the measurement will occur for tw...

Page 120: ...and width Limited 20 MHz Step Response Settling Errors Volts Div Setting Step Amplitude Settling Error 2 at Step Response Settling Errors Volts Div Setting Step Amplitude 20 ns 100 ns 20 ms 1 mV div 1...

Page 121: ...um holdoff is 12 seconds The minimum resolution is 8 ns for settings 1 2 ms Lowest Frequency for Successful Operation of Set Level to 50 Function 30 Hz Sensitivity Edge Trigger Not DC Coupled3 Trigger...

Page 122: ...elta Time Setting Input Signal Sync Amplitude for Stable Triggering HDTV and FLEXFMT modes Option 05 Video Trigger All field selections 0 6 division to 4 divisions Jitter for HDTV mode Option 05 Video...

Page 123: ...e footnote for Sensitivity Edge Type Trigger DC Coupled in this table Stable counting of events is counting that misses no events 6 The minimum signal levels required for stable pulse width or glitch...

Page 124: ...Typical Characteristics 2 26 TDS 684A TDS 744 Performance Verification and Specifications...

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